Synthesis & characterization of PVA/STA composite polymer electrolyte membranes for fuel cell application

被引：30

作者：

Anis, Arfat ^{[1
]}

Banthia, A. K. ^{[1
]}

Bandyopadhyay, S. ^{[2
]}

机构：

[1] Indian Inst Technol, Ctr Mat Sci, Kharagpur 721302, W Bengal, India

[2] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW, Australia

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2008年 / 17卷 / 05期

关键词：

advanced characterization; energy; polymer matrix composites;

D O I：

10.1007/s11665-008-9200-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chemically cross-linked composite membranes consisting of poly(vinyl alcohol) (PVA) and silicotungstic acid (STA) have been prepared by solution casting and evaluated as proton-conducting polymer electrolytes. The proton conductivity of the membranes was investigated as a function of blending composition, cross-linking density, and temperature. The conductivity mechanism was investigated by using Impedance spectroscopy in the region between 40 Hz and 10 MHz. Membranes were also characterized by FTIR spectroscopy to confirm the crossl-inking reaction and differential scanning calorimetry (DSC) to assess the thermal stability. Membrane swelling decreased with increase in cross-linking density accompanied by improvement in mechanical properties. The proton conductivity of the membranes was of the order of 10(-3)S/cm and showed similar resistance to methanol permeability as Nafion 117 under the same measurement conditions.

引用

页码：772 / 779

页数：8

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